Difference between revisions of "Host invasion by microorganisms"
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*'''Orofecal''':typically enteric infections | *'''Orofecal''':typically enteric infections | ||
| − | ===[[Viruses | + | ===[[:Category:Viruses|Viruses]]=== |
===[[:Category:Bacteria|Bacteria]]=== | ===[[:Category:Bacteria|Bacteria]]=== | ||
| − | ===[[Parasites - | + | ===[[Parasites - Wikiblood|Parasites]]=== |
===[[Fungi - Wikiblood|Fungi]]=== | ===[[Fungi - Wikiblood|Fungi]]=== | ||
Revision as of 13:06, 17 May 2010
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Introduction
One of the main causes of disease is infection by microorganisms, with four types so far identified:
- Viruses
- Bacteria
- Fungi
- Parasites- comprising protozoa and helminths
All exist as either:
- Primary pathogens (obligate): presence always corresponds with disease
- Secondary (opportunistic): prerequisites must be fulfilled before disease occurs
Microorganisms can enter the body by three routes:
- Contact: typically seen in dermatological infections
- Aerosol: typically respiratory infections
- Orofecal:typically enteric infections
Viruses
Bacteria
Parasites
Fungi
Host Invasion Flashcards
References
- Murphy, K., Travers, P. and Walport, M. (2008) Janeway's Immunobiology. 7th ed. New York: Garland Science Publishing.